I would like to thank Professor Danesh Tafti of the Mechanical Engineering Department at Virginia Tech, for providing the program used for the psrun profiling example in Example 5. This is a computational kernel extracted from a computational fluid dynamics application named GenIDLEST that Tafti and his research team use, maintain and develop. I also would like to express my thanks to the entire PAPI team of the Innovative Computing Laboratory at the University of Tennessee-Knoxville for their support and encouragement during the development of PerfSuite.